This is the method I know so far to 100% pop this trophy. It will require a full group of 5 people if you want to boost it. The person who is going to unlock it must be the predator and must be the host in a private lobby. Only press R2 to use your wrist blades and let the fire team all revive each other 3 times so the 4th time the fire team members will instantly die instead of going into a dying state. This 100% pops the trophy. To be safe don't claim trophies while going for this as it can count as a finisher, not a wrist blade kill. Also don't climb tress as it auto equips you plasmacaster.